Sesangen sumaneun apeumi isseo

Geu soge neoreul dul suneun eopseo oh

Majuchin du nune

Damgyeojin neoye haru gadeukhi useumi

Meomchuji anke haneun geoshi

Amado nae soweonilji molla

I’m your happy virus

Neoye useumi

Naegen geu mueosboda

Sojunghanikka

I’ll be there for you

Muneojiryeo handaedo

Gwaenchana neul geuraetteus

Smile, smile, smile

Jichyeo sseureojil ttaedo

Geokjeong ma neul geuraetteus

Usja, usja, usja

I’m your happy virus

Neo uljima seulpeujana

Naega daeshin apeul sun eopseulkka

Maju japeun du sone

Namgyeodun uri haru gadeukhi useumi

Meomchuji anke hadorok yaksokhalge

Apeurodo yeongweonhi

I’m your happy virus

Neoye useumi

Naegen geu mueosboda

Sojunghanikka

I’ll be there for you

Muneojiryeo handaedo

Gwaenchana neul geuraetteus

Smile, smile, smile

Jichyeo sseureojil ttaedo

Geokjeong ma neul geuraetteus

Usja, usja, usja

Naega neoye misoga dwegopeun iyu

Nareul utge mandeun neoye sarang geuppuniya

Muneojiryeo handaedo

Gwaenchana neul geuraetteus

Smile, smile, smile

Byeonhameopshi jigeumcheoreom

Neoye yeopeul yaksokhalge

Ojik neoye

Happy happy virus